21514880

素因数分解:

$2^7\times 5^1\times {\mathrm{33617}}^1$

素因数の和:33636

約数の個数: 32

約数和(自身を含む): 51435540

約数和(自身を除く): 29920660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33617, 67234, 134468, 168085, 268936, 336170, 537872, 672340, 1075744, 1344680, 2151488, 2689360, 4302976, 5378720, 10757440, 21514880]

約数ペア:

[(1, 21514880), (2, 10757440), (4, 5378720), (5, 4302976), (8, 2689360), (10, 2151488), (16, 1344680), (20, 1075744), (32, 672340), (40, 537872), (64, 336170), (80, 268936), (128, 168085), (160, 134468), (320, 67234), (640, 33617)]